I work for Delta, and have since the Northwest merger. I've said from the beginning that Northwest made Delta a better flying operation (flight ops, standards, training) and Delta made Northwest a better company (labor relations, doing the right thing, common cause, corporate ethics).
Today, I feel like I won the lottery to be working for Delta. From the top down, I'm convinced the company sincerely cares for its employees, customers, shareholders and business, which I'm convinced is why it has done so well over the past several years relative to its peers.
I'm no Kool-aid drinker, but I do love going to work. I think our passengers like and respect the airline; I'm happy to extend some effort and do what I can to give our customers a better experience; I'm proud of our status as the premier US carrier on just about any metric; I want to continue to make us better; and last, but certainly not least, I enjoyed receiving my profit sharing check of roughly $20k USD on Valentine's Day.
I realize that carriers don't tend to stay at the top of the heap forever. Success breeds arrogance. I'm just happy to have spent the past five or so years here in the sunshine.